{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xadd5360398b28ce47f81ef74ae28920ef2b7f03eef0d2194058791f18a89c38f",
    "signature": "0x8936e015a77677c6956af17e97aa1ce21bff13c197082b93dbc56927ae24ee1c3d94f0232467154eef066bd8ec583760691461c2eb5c9065e106d8e2e38f454b1b",
    "signer": "0xc1F82405E2FC55De9e9c8AE1d53d3070086243E6",
    "userId": "221018654"
  }
}