{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "415050011",
    "entityType": "User",
    "nonce": "0x4cd991a14ffcd3ebeee25d312841570e1105b965a7141953f41f045a1664f7ab",
    "signature": "0x14f2defffcc0c07dc21dc8db8fdf7e95f504b3a5ea8f920e054ad53be49ecdd820bc089f0e785db930b80516a1533f815cff2539a27cc7a821a81aabe08f63031c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}