{
  "manageEntity": {
    "action": "Update",
    "entityId": "1870913",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x41e5f646693f3eac06bb5a4bde8cbefb0b5a3a2a47f234ffae3df39cebf73db7",
    "signature": "0x0db9ca373e2b5023a7a1b0f0e57b09645e5e9d50adef823f239a864e2a43be220423def0a4323d05696fa44ea332b2836875d17360a6137e745e74ae356f60c41b",
    "signer": "0x1cE2F33DB2a0c4041F19df291fEb25aac4c02e5A",
    "userId": "1870913"
  }
}