{
  "manageEntity": {
    "action": "Save",
    "entityId": "767218857",
    "entityType": "Track",
    "nonce": "0xc4ec4efa012d50b9e7e433d7d04c5c3510cd4eff2c7e49c03f5cae9d2a4ac03c",
    "signature": "0x4f115089abf8bfa582a8c05d1db08bd238526abb710cb7131b3b86795b9049a567638cb86d0511f57d7e3f56313cb25e3f525cc82b8bf85134ecef7a26117b5d1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}