{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x4835dfa07fba214b99a0853f24fd4afb0fdb78f5489b7e9be47ead64ebf8f29a",
    "signature": "0xb9a533692f0d2aadee0a5566427b86098adb889883caeee77a560105ac9e994523660eaa70af4ae911bf32e878659aa419cb196baa5c6a87615732d7b3c9f8761b",
    "signer": "0x406fd2b6f6C6cC5622Ac1c5799cE4911D81e02a7",
    "userId": "461949730"
  }
}