{
  "manageEntity": {
    "action": "Save",
    "entityId": "1007757",
    "entityType": "Track",
    "nonce": "0xe8b536e1e57dc14ee7838e20997e804491120e54c02db3cfc0dd17e413d97736",
    "signature": "0x2d518afc454225c44e3317ad7e82ee965f9ef071f06e3d3edb0405b5c02363034126561f23dba5eaf0776b432f8057520de4c93e24db9b739d062e169fddc17b1b",
    "signer": "0x3fB3464202dCA960F65e2706E5749EaFc41e4b48",
    "userId": "826685732"
  }
}