{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x3488ff6d287dbcfb9acaf9181db4ce41474d128a1f88224fb19bd402aadbd3c0",
    "signature": "0xf1f60faca266103cae6c65fd94fd06417659dbf265516003c51b4b55ae91ec1a7d435b98608fc66583176baf35ae02c565acf410dbd68a81c0138d7caa8179601b",
    "signer": "0x9c1a2996a6DCe12e947BD7C8A755b6150A3eD5f4",
    "userId": "474113241"
  }
}