{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648802251",
    "entityType": "User",
    "nonce": "0x084592cab4868be0b0cede5860cad0383ba694e6eed40dec87f4d65d0433d24d",
    "signature": "0xaeb90448dc0ba9d6a04790fda9654ef02c0009219b4ec341b72538f0572418ae0f816c166afed9edc5d9ff2d040de888c7b679fda38bf803ff3d9fc0e94eafd91b",
    "signer": "0x730D61884359389d8aA22afeF2b83FF4F7c9ee63",
    "userId": "342017819"
  }
}