{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x119ea444c78fc601211792292e15127c1432c38e29ea27ad4524853b00d78092",
    "signature": "0x5059fe382913806c2b3d9124cfa55fbf1686828035ff2878f84a4164cb59aad973a50d1db0eb45af9b9672418313f11dbae42245afc61dd2e84ace9e10afa2181c",
    "signer": "0xD3bD508AA02cBC11458635BB836b8bd6B3BFc7B3",
    "userId": "468287560"
  }
}