{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x4ebd8ac31a7faab2cc623dca4f7a37c4792dab5dd6ebf92ec4bbb8c685bed18f",
    "signature": "0xa4df05a366d4e39351a8cc7b07e8c8596fe22970ce4c80aae2aac9d15f9b014f72e0eeae4b9587459c7e323b66d3847fdb7cb5b6d0690f0b48aca7ff1f958df61c",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}