{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "869642170",
    "entityType": "User",
    "nonce": "0x2c9308ecb6f80b50e7728f48c9f30306462ed60d8640297651bf8b256a72a40c",
    "signature": "0xd462242bb651b3079fff8de7a93b667f6ddc41e1566fbc61b1ed2ddb143fa15e7792f389f2a6356aac22b5848197cf7b8bb9bdd23e14408603794c5fa907b6cb1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}