{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8f4c2814c01c33f0eb3259dd586f531e3c9b6cf29d192dfc795c79677abf0ab2",
    "signature": "0x5ec5274b1b510257c3f64e4f497ab61cd7b70fe6c1d44d1a6adc260edfe918007e0590b18930fae94071b7ec52c5dc08dc211a0b842d7f08b7ce82d92ebc5a3a1c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}