{
  "manageEntity": {
    "action": "Save",
    "entityId": "1079195",
    "entityType": "Track",
    "nonce": "0xafa01d43ec3642dbdaa7031e749ca4d7b564d6612d42e44adfcc671b2dc1e878",
    "signature": "0x27d077d36a757396f6e1fc7069ca125275c970b0bc99741b3202ad8e720a74ec27e9afd186dfddfe36176221a553655dfd8708f62d281c3204ff7f3ee9eeba6d1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}