{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x967ffd956b3a0439cd5c643dad5f252b72ea2881988cca3260a6808827e62038",
    "signature": "0xa293ccca0e6c962dc1c44b5cef3a446c8d077fc7d84829bbb470920897ffeb9d428cafd7ee47cf581442ec903e9e1f3b69edc36f9791cf30b0950eea2360de321b",
    "signer": "0xA3cEd4452Ec88415B96DE1F0BDfc3a358cE048b5",
    "userId": "387447420"
  }
}