{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "551883994",
    "entityType": "User",
    "nonce": "0xbae400e9aa3b95108938ed26177fdaf4592948d45810a234ba463e4ed5033670",
    "signature": "0x55adf89847a56f8a70f1dffac8e85394a8212b03092b3eafc74706543b4657386830cb3dd75dd435b6e433676d707aa204e29baca121897e9d258cb07bf111e31b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}