{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "553401149",
    "entityType": "User",
    "nonce": "0xf9fa9b66f735a9bdd7760dc49c384df75a1bcffae9f0706e05cc74e9bd9c2229",
    "signature": "0x4d36ca617020ed8bae2963eda6c468074e16f40d4dcad1ffebf3ee7973db1ed93faa4d0839e1f17e7fe462f6842a11f2c0effd1137454d7f6999ff874df79af21b",
    "signer": "0xB7FbBB4282208079CCDcA5f9209D3dbD873AFeAb",
    "userId": "400413076"
  }
}