{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774741623",
    "entityType": "User",
    "nonce": "0x1f48d9b04b8de9bf21bb098966579ba04899c5660d088c863ad6db5a0d7b59db",
    "signature": "0x3bc318b53e77a567eace6d862ed3d63f632cdd3e7def6770d8273f1f1b5b2d1b558b668337a915ff4b6d0c9a51e41e9cc56b3ca1bd5ffd82073ae579b3400d631b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}