{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "60753512",
    "entityType": "User",
    "nonce": "0xd0654e2b8a6116393ca80cdd6617d0b552f477b4278d9cde1543c4fc3e22f51e",
    "signature": "0xdbcfcb8e046ceeacaca1a6d92e2d8bf413f0287adec215ced7af6bc62071ed4d7c9df53f9286a4024d8a61e67ab5819b3f1988f17d8caa5ce6f8198e1d1a96551c",
    "signer": "0x34F50BD1d16FaA0390f6037c86b7D52Ff6629a25",
    "userId": "739630124"
  }
}