{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1390696618",
    "entityType": "Track",
    "nonce": "0xd6df9aec060cff984f3a9f67d979a9b0464d7976d8b3997bb104b805e064cdf4",
    "signature": "0x9593f636f06c297f678165a74c840def2c7a72a9388d141bf42319b7f6f6db4270c6770f21ab6dcdec9a4030cd318d62f9f95fbf66406de24c63fb05c170de6f1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}