{
  "manageEntity": {
    "action": "Save",
    "entityId": "1108791877",
    "entityType": "Track",
    "nonce": "0xf85cbf15011dc97efeea7b07c059c754bab69dee6be8ef2a3e18827c8c0e4163",
    "signature": "0x1ed0526a3d65e7475b186601c78031f93779bd7f4f9bebbdf64b1a24c1a6ddb50682a7c7cef12f75457e440ed3a5f7ce4a281fcce0374dc6e16b60ad62d64d391b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}