{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536740013",
    "entityType": "User",
    "nonce": "0xcf2cf40705024e7212f5714f55fb4eeb5077cdd29771474ac6e29eac02548965",
    "signature": "0xe66d7b4421c86f4f221dc9557db1087de66b1d382b8e351f3e9c12ec4bcaecc94d8f34e178b46022b093ea5bf4f42c3ba00954c3e306988b636b90cd4461dff01b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}