{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471974",
    "entityType": "User",
    "nonce": "0x157f931345bed7b6e011967e8d42c46421da4854f8bebf0c5b7a3b7e98b50b5b",
    "signature": "0x16bb044378610e6f256f96e5bfff37e1a23243371a83eb8f7c44072c9dd2af9123b264761fa73fbc6a89c96093b01a944cfe2af90d120e046c71bd098091d1501b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}