{
  "manageEntity": {
    "action": "Save",
    "entityId": "1675125931",
    "entityType": "Track",
    "nonce": "0xb89d9a0eba584f2ecffad8b82d96525b3796777c29cd5dada8b09fd0177a23f2",
    "signature": "0x6af1d06cd7c99b95d3f72e445767fb089b3c618cee359ae54b97721e3d74fb91497d209f4a2a93501b81bf52dce8c99e18dacba21e133fb75830ae1acc1c3b171c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}