{
  "manageEntity": {
    "action": "Save",
    "entityId": "1567003187",
    "entityType": "Track",
    "nonce": "0xca60fc55bb984b2abb773f2735c6bfe0523ae77c3a343f28b02c546dae3982b5",
    "signature": "0x4068659954601bd4d11d8319c088d070017836f1dc0c27eca4bb0a97dabb70ca1dbcb6fb2a0e067975f37451f90d8dcfb2699a3e4fd630d5af964dfcfe87f82d1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}