{
  "manageEntity": {
    "action": "Save",
    "entityId": "162625454",
    "entityType": "Track",
    "nonce": "0xab9c612096e417cb78e855bd3b681be514ea948b2f4f5d84e65d55ee01b99646",
    "signature": "0x1a94002162bcee6e426d68fc1dea64a3cdce7541b91630e53894a70bbd58e84e1808f277780b6f7a8ebf64017ae8c31a3c77f88cc95569e970a3fb5bc83d01bf1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}