{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512626",
    "entityType": "User",
    "nonce": "0x30b7c9629c92e96913f3322c5e4e8f9bccb00c0687c66fcc9156ec039982b6ff",
    "signature": "0x7656b5838c5ba0f9dd9cafd9288eebfe59d44ce677516c09bab4d97a9f9838011a0fe28f8ed5bb5dbee765284d3ca5fd9e98fb1c1fe859a5fc6acb848ca2ceb91b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}