{
  "manageEntity": {
    "action": "Update",
    "entityId": "751556036",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x93039dc1c39c7b14d179660a143aeadf07c9ab8aa909daca32b38ec1a80075f2",
    "signature": "0xd6d602495fb823293602b7d99edd5cbd3b716671d9f3bc2592fc35661987e02319bdf1cc1e9007881db61a6cdb3d8e726841ec9c5b797354563202f47391e1bc1b",
    "signer": "0x5500cFa1db7064Df41fDCBA32c552371Bec5Ed58",
    "userId": "751556036"
  }
}