{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215386",
    "entityType": "User",
    "nonce": "0x3fafeb572e34da9e9f23d8632c5a2850f02dd168d54a020fab53cc926af02c3c",
    "signature": "0x417fc1a3bff6f3e72ef1821a2358fa062f69f6f4f1b107c195abb9cd5855245e6dab11aaf622a11b2c812a8b3eddaa408abe6c552f1e0e5c751c67719ab10df51b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}