{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57894",
    "entityType": "User",
    "nonce": "0xe9c74a46ed5e7047c2c30b2acd9420580465d0693c89944dabdda43a686e6469",
    "signature": "0x6f81180f243777b452762432ef302d27e525b14acb6f630e1b6805609ed8c14160598efcfea3c18ee4a7239fe8dc33c0c9ec1bfe01c4823c941f7271f9d931631c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}