{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0xd029a862fe7b91ac32b9998a4ae6e08c2b7e797ebd80e019f28efe2d3e82b219",
    "signature": "0x4e18ec4a6296661cf25505de634a345384ac754c9f49e3167ed57f4f883c93dc500dac198a1b787383e89bdd760e3025242b11eed10b286d5ebaf65fafb4e9ff1c",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}