{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499534190",
    "entityType": "User",
    "nonce": "0x8629d52193dc0a0db9f1896ffca646814b8ef0b2330c74060b3e061c63832917",
    "signature": "0x53f31a92d150f882d227190cd86f5d09533172419af1e4a63b57f541ffaa71b55c3d8841df6b46b2dbcd83132e85aad69f4ed29d5b782e722be86fb6b6adaea61c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}