{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390",
    "entityType": "User",
    "nonce": "0xdc744cb2899c813651a9b6bf96b41745f44da6c522c68bb85fb08d2f2e84cf23",
    "signature": "0x94746a3b9f29380809d347cad04667bc51a8822860d8ff831109b641b41d38a117a7277ef59b2432f93e752030002f0e96ab7d3592aa00fc0b3e23919fbe4fb61c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}