{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xce489677ea49625203aab32ff88813f5debd2f0ad47db39a0742d676f712333e",
    "signature": "0xf1e01cb7cb3edabf07eeb67a075329f939bb9958ae5432680f4a285bc10f96d133edc0cb3f935e5166bb576fa365d937da16606b1d4a22d4cbda1c9af1e1c3aa1b",
    "signer": "0xdbA6d42feF3cf846342F2601ed7438391E677d43",
    "userId": "630030120"
  }
}