{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x081671827760cf9ee7e2c734366f67a7d6d45468da3a9a222630e1e57a54ed0a",
    "signature": "0x143358cbe320f2d4819e7dd0d0cfcbe658ad97005176196dda4b28333e52cf6d028bda9db9ff3baaaa0c8629de451225977ff7f66305adf5e50a06a14d44b19b1c",
    "signer": "0x93430810882B6aE0B8d598F5378b6A3156D682B4",
    "userId": "412472630"
  }
}