{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389780",
    "entityType": "User",
    "nonce": "0x2675a5e714762e7c437cf2bac5b5a2563c49f3b6ee3c893058c722dbd763b075",
    "signature": "0x79e43b39b03f1c13ac32049e1adbca9ff0533546d27733b90d1f6dec26d4858c4cb2c5520491240cc35e7d503f9b3d5c96126f859255227ec515d46fe8f638f71c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}