{
  "manageEntity": {
    "action": "Save",
    "entityId": "525096",
    "entityType": "Track",
    "nonce": "0xa525357c4c8937b0e79f7b9a0c9a63d4e255e12936a3bb85cce1f5ab7270b9c9",
    "signature": "0x86f54704af7e54b24f7541366b7a7b933aae4f550611a02c3d7c30a6074a7adc1c867c57b720c905febe0ad10fffdf581b039ec0a223435ad17272f4bffcf8b11c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}