{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9fe9e88eacabef116868027d46849488800d3547cd18dd6e2b7d0027f4708e66",
    "signature": "0x5c7becf5a999124f893a518599b5955a1db4f9491f9fb636d71e2fc712b6f1190825bad9cf8feaf3446298aaa0ca11dc7349c1e5308edccadbf033b62e5f0bd41c",
    "signer": "0x643a7D01c8D4d435f9263d6dE2d6C2C3352e70ed",
    "userId": "305151012"
  }
}