{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102405",
    "entityType": "User",
    "nonce": "0x353ea84011ddb42fb2fe27bd029d0803beb3fbf596c378298c4c9491de1c92b3",
    "signature": "0x149b5fa0c6684053d7c16224f0ca15bfdfdb88471ae2929249edc164c8e83974633a997528494750ec942fcf4f7d52c2606fe9498b2240f1305ef12a07216aa01c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}