{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304545363",
    "entityType": "User",
    "nonce": "0x001b60d0890ebd982db0a44919cd1be17617c36d499dff252058927557fe66c4",
    "signature": "0x0ab1f0337920b8682bef4dac5f2f664d48f70a594cdabf3280dce359ba0df52a33049fb9c5ba738f9ebefba4a78cfff2ebebe28490f1336d2435051942b6ebff1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}