{
  "manageEntity": {
    "action": "Save",
    "entityId": "985056189",
    "entityType": "Track",
    "nonce": "0x191d8c50b16915edf97193580586e36051475618fc6bf91437b7f8c5db7f531c",
    "signature": "0xebc911854c12291d11976510d87d2a74da7e3c7e76af29b0dd6cd8aed18d76a843c3eb192e1bd421e1552eae3a68cc220e442402254f1be98333dff1dab636ee1b",
    "signer": "0x92a5082636c97Db0Ae888484D85e4c8494A3B791",
    "userId": "895527427"
  }
}