{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335904",
    "entityType": "User",
    "nonce": "0xe63329bcb1c38f9efd2b25a51bb24cf1f2983675485f9f34e780caa3a546bb3b",
    "signature": "0xb6e4096d09cced0920ae2348d64b8775acf4b05aad8ef30267ced5ccaf21f9fd6d11073095008b55040b5003b812d6649d12cc4d24506f5ade7e30ab22679a0f1b",
    "signer": "0xEf25fe0826e6AD409E9bc820F62DCE0b3904363B",
    "userId": "299963"
  }
}