{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "105907",
    "entityType": "User",
    "nonce": "0xe758351f2d901302dd6557a3ea6ee951da7027ea68ad64cbe1395d721da9ce18",
    "signature": "0x4e6d6f7486f1fbad35ad06f2ec2b1d8f9eeeea0cdeaa57e5627d4317f58ecd344ed710db040394551b7603acb1c81f54cdb13e007968d2d84278273f76492c201c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}