{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486533521",
    "entityType": "User",
    "nonce": "0x0fdbf8c43e4d3f20e80e972be97d017b57279d4665610f3093680c93368fae69",
    "signature": "0x771998a1fd8e86692f7d2f56b725e1e98c75ef83285e422a2c68449d4bed8b231d8ca6cc2c5524a45da0f1208cc48b6f50d81105244e0acf3086233d522b5a701c",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}