{
  "manageEntity": {
    "action": "Update",
    "entityId": "121018469",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieranny7nlkx4f5yy7ulq7wmccldqfcqppv4p5zjg7vf5v4aay4nmgja\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":367289030}]}}}",
    "nonce": "0x0406b59ba12cc943a77ee739f77bbc1aa61bad2a345de1969e3ad8b52f6b6f3a",
    "signature": "0x10a927d8c292ad282dfc54d3a88a63d1a9a28dddc1affa47ed64fa8ffbf13aa0690e9d39cd4c406923d6e3976f67d28481cbf933081507ddf024bd5ab0f651ab1c",
    "signer": "0x29DA29cFDe586469112dA8593Fcb9B91e30468e1",
    "userId": "121018469"
  }
}