{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107423806",
    "entityType": "User",
    "nonce": "0xa8b389ee3b9a88f4578f5bf1b1c464bc6b2139fbf1887afb11786d0a9d9fd5d7",
    "signature": "0x0dd91ed7fc096166681a511e02cdf73958cb0b41e3d679d5d1821636c28a4c7c7ecfce46a4e46f1d673895f229efc936421ff8824068188963f47a4d5809d0601b",
    "signer": "0x405A18E09D8C4100F2412f37001497351EcE9C2c",
    "userId": "21357518"
  }
}