{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf540d26516aee9108670e845a1f8aaa80c7268e0ebaa85dcbbf348df985f18fd",
    "signature": "0xcff414cc9c89ecea3417ea24a739de4288a008b5286af6a2b2098a482605847a0fd1cf4a0b15289f31b3c72d7dc96f10706cd54844b56cd86d4d1877f3b032ec1c",
    "signer": "0x6acb8e6103781063ff1a8cEE612F7c3373737bc4",
    "userId": "428535579"
  }
}