{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c49daf9f49389d5e5016a6d57e0c4faffd9e92d7e1dca479822e9500c8b5e12",
    "signature": "0x5db7d04523f4aae244f7a9998ebbd33bc54728a9ad78d7c0167d5b172ba612662d802df8882f763b70c7bad66ad93647aaf1177b8ac02ecda702506fc578e7941c",
    "signer": "0x6BE1f4476c70d4618B87fc4CCB9D543Af7D23714",
    "userId": "105142162"
  }
}