{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120749",
    "entityType": "User",
    "nonce": "0x87cb0b3b7b4abe7c5c495acfbf7a3861d431482d62efc1aa4551c2604518de1d",
    "signature": "0xe900a15d9306ebc2220375f26d6b45c5a19a557dfae1e17b7a380ced60afa4af021c056bddaa566a734f5af6279b311d04a8e3fbce1d186365d0843fcd2a97e21b",
    "signer": "0xDCBa834070cc02e7e4bd536cD1644e43e6C941BD",
    "userId": "214528491"
  }
}