{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1518",
    "entityType": "User",
    "nonce": "0xa2e22b8cec7821a985c65a18501c575840726eb434fce7682f34bb85f50f9c54",
    "signature": "0xe1d9752b309858ac9e8bef6b9f1420f8a0671ffa180c31970fd485872a51999b2cb38bbee65d3de52579eba013344ef206fe2e009e5ce205adaa03f26d580cde1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}