{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "842982090",
    "entityType": "User",
    "nonce": "0x687abc273980d3756ab018482feb552d7151c01c6db4c7270d2c881e05eaaf4c",
    "signature": "0x0ddb8b1b2361da92b39c352dc6d97742dae9dca9b827e7fa61657f8ad13a87d46d21aa20f8f8b67eb8199e2b86080c45372431e986b7473e416744e68dbc47051c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}