{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd61d148019d08819a8c7e743231263844cf5187848f8486b7e83a7d81dc964a0",
    "signature": "0x33b914b49327994dd7d97cd32cbaba6b329c39bd6fadfeee9f958f1290a6815608ecf07618d020ffd3bb122d4aab1f9efd8b9eb7f6761898062810a4dbecf29e1b",
    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}