{
  "manageEntity": {
    "action": "Save",
    "entityId": "1182150425",
    "entityType": "Track",
    "nonce": "0x113267dbbf024524b99b1c3bad154c0349a49891bd9c3c562f093eec2de36c67",
    "signature": "0xc16b9c3efd0a1a6b1da3a530db2c1b98b006cbd33cac3e04c2ffc28ad1b9ea8836c61a904ca89efbcc73a30ad86017aa8ffedd954cd030a082f51fed412152001c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}