{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa16aa709372bdf0d4258633bfa307b23d32220090464c10a92b17b4a53f382ce",
    "signature": "0x862101c3b18db2bf081a61f23928db42952f515e4abc763551c9e8ca60acfdc0212115884da5037b5ac2601e6a07fcb105ff672ad85929240bc2cf78bfd553cd1b",
    "signer": "0xDC3F1116Ce7B919D352b15Bb4C20db6Bd453F50e",
    "userId": "583138572"
  }
}