{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "899783541",
    "entityType": "User",
    "nonce": "0x6fe05f184ef19a83548e80b5eb294c8ae4886d33a73dce1696d4af196e6d093a",
    "signature": "0xcff4e63bf2398cc40d23135e03190492c172d9d5708baa8ad25eb708ce9e646733fa95a9939ca5ad19a52e8b4e24ede04eeb5c5f223aab0250d9242d3a6a67331c",
    "signer": "0x7Ab9762f6ff8B90573F96d200B82a59e9476817E",
    "userId": "473989947"
  }
}