{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194567",
    "entityType": "User",
    "nonce": "0x55f42156bc5d753552c4e42f941097d690ffb2a745832d6601ff4ff2c56f4e8e",
    "signature": "0xe012202e00af69a1972a0692f38291ee7c71c9f2b10e1120c3a79292ac62a0fd155a8bec6e82dc85c6ebe44e21f29e26e98f555d2fecaebfcc0072658267d66f1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}