{
  "manageEntity": {
    "action": "Save",
    "entityId": "158187642",
    "entityType": "Track",
    "nonce": "1792100826557760827",
    "signature": "0x73221cc8ca8e222c6cb48547e5707be286fec53cd84eb29b3487fb12f735cff43360beb7d1c5e30485e00a1c4d486d9e7641d80a30886b3ec40e053e5e56dee11c",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}