{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b4881725240fce04cf696a38164ad7637d5804f3bafe2dc1c79ffd3f91ad0ac",
    "signature": "0x17ca6c17e847f829356e44b97cf6a72f87ca3dafa7976b1603131fd9495d342c671825a2bce787c2768133aad8a37d12388b3d96a1666176d9c9449999ef277e1b",
    "signer": "0x4b4F9F0044fbe40EA2c352c9E49FCb168ceF0103",
    "userId": "188746372"
  }
}