{
  "manageEntity": {
    "action": "Save",
    "entityId": "764280596",
    "entityType": "Track",
    "nonce": "0xebdaa61ab57a5fc4668853e7a654e01c61e2ab4dc1d77c3d65c9492cbba531d6",
    "signature": "0x7dde3c813f5276eb9699ffa71d34729ccd49c5143d50d5d4dc13c1dd5fae6b6e709ef36b90d39f86217712b2949b49999a3377fe015992c3168c91c727d7ec9e1b",
    "signer": "0x849938DF063059EbF6d907f55E72C083347C9343",
    "userId": "796529120"
  }
}