{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x0043d629fb56c8a0ca676b082d6ef3a6cc402fcdc334f06328b040237d7cca21",
    "signature": "0x1da5b7fc5318edf07726d8758e1996b57f575d985bbc7973399b8d54e89e0d3637151da1bfd7081de5f73971b6aa25063562d0763fd4f5cc13cce6ec97ef3d161b",
    "signer": "0xd832cDDE8Da519b6aD56d440c66722AC65cc18C8",
    "userId": "755155896"
  }
}