{
  "manageEntity": {
    "action": "Update",
    "entityId": "678598071",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xae19e861332b10b748a5b2f6d36309fcaa85813189cb0100416cb15a1475cdb9",
    "signature": "0xcb208bf92c1528b09ee03706340894493351d22917f2218401b7153dd28d12e44a1cbc75c05b36629a3ef75dfe3fa31a9524ab4f98cf7689d13054e8fd57b2fb1b",
    "signer": "0x0b5154bA4A70cE61CC119fa2cc8f7e52c84586b0",
    "userId": "678598071"
  }
}