{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "352587",
    "entityType": "User",
    "nonce": "0x53f449b66e0159a41bd4896bd7fd7c5bd8106ba08c4cc697e5f40b7cc430cfe5",
    "signature": "0x6a3714a46199c4369a60d5ffb1720fa4a1a7eb9c3cca176a3f7b606e39991d0231593e9fb9c513943aaae0588409f29ada95edf845d895222b2fb9e6ae24c9f81c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}