{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334539",
    "entityType": "User",
    "nonce": "0x8f21defe9be08c5eee63c4f059a651649856be99d9ef8aff060cb68dbe8a6cc0",
    "signature": "0x66f12205e9efb118ab03c8cec80ace867d70559607cd9f9152bbb2a652b5b73932ecb155b6f9669473faeb19d37d8a12684954e493d3ccb76aa9e70f7c4178fa1c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}