{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4579aded1ddd10f62edd9216eaa7b69dd954c55d2ca75950397a06facb5544f4",
    "signature": "0x61e6232b088830552d05c1027be509c6d2dc148aeb04d51c44fc7609a3bec1442cab01e4924cca0ac1fd4bad1f3f83493f7aa71187b260d349fd4b406f430a571c",
    "signer": "0xFBdcAf407514B80D396bfEE8Cf0E7bd28dc3F02E",
    "userId": "905612090"
  }
}