{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x41bbf0eab6f92d4b26e33f04b2a92a02a0cdc8186655349c00be03a46abd2453",
    "signature": "0xbc9fa67d5143b1013e71ebe38fa06b40f6059de85c29b29f6d599b6cf27de0115aedcb92fb3c73d245b7124eb31800bb1e77102f7e6f586c832912b589bce78e1b",
    "signer": "0xe915bF72b4fD2bcCE07667Fb2fB07c09c5FF318A",
    "userId": "331441829"
  }
}