{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321916",
    "entityType": "User",
    "nonce": "0x9f6cf3de8c9b443dedc184152ad1f6fd2a9e8d37770c90988d79b94d05624268",
    "signature": "0xb2ea0c5d544bc72f341be2fdd817ba3542e03b35f28fa90e0d0adbded21159a77bdc3bb3bd78787aa47765a4a592ae70cf7f4d685fd1179b5a7e85ca11b370d11b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}