{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4262a96bd32bb67f4ca09e5d633b39017921803f0be265d3dd6c7618a3867a2a",
    "signature": "0xcdc984e55fd9f3ede1a6b0f2918dbae647bdc4811c9550ca632b12abbbbc6c5e6ac62fed69cfdffced3b03dc1bc779aa6633e55147299950f325d4cdd608cdc41b",
    "signer": "0x53Eb2aBf0EA503C2684758B722D6bB3c9F8cbE8F",
    "userId": "883894885"
  }
}