{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf248920542a327ec7a2ec54f544f1636e1b610c4af0bdc10e89c400b6cf3ef00",
    "signature": "0x592a878ce1c1ed9a4396be0ac46f28b54d3158502a980657fd11cd5a246b1bcc5bb92e0faeb1cd157c130abe6814ae63f2f7305d549b53d40e8e34069660b6b21b",
    "signer": "0xfe0812559692b402114f2E22b5680970591c3e39",
    "userId": "900235710"
  }
}