{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "38437",
    "entityType": "User",
    "nonce": "0xf77dbe9b9c4f4a18a09d2be928d6b7d38cd27101548c537d76e93fa07d23db19",
    "signature": "0x5043cc5bfef54357e4396372ae5a5cb84277170e0d70ce41842916874e12fcfd38b3167f9dc00a1147ee48e769feec14732d9624fb06f69cf60a2dd50c159fab1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}