{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a447a6d461295f0a67be89638028e34ceb67dac676eba6941fde1a543c534e8",
    "signature": "0x9de28d268436714caeb3a709b10c7e96451d191b6a1e2aea76bc3f50730b360b001b78484ba7624080808414939f6a75079931fec33ee8e2973cad8ada7b43211b",
    "signer": "0xe7C52e9b13a79d2ec04B0A3E3053850A2A7B68C4",
    "userId": "831708899"
  }
}