{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x1cb2bb49bf47bc63ccacdc82f27b90239dfa6714ce815e0a46294ad928b006ef",
    "signature": "0x91e02b4b69a1bdf0f31e5a0faeb609dea6fff52dbb8cd609bf45c7b7fc95c2727ad1ca99aea4be5e031c4040e1870ada21036aaa8e393cd2b690d575e19887aa1c",
    "signer": "0x71d0bffb1011D6Adc66839Dd71b9e177a5B5dc63",
    "userId": "722673517"
  }
}