{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa75ce11e842df900c05c04c849b586e498c14163d75a9651152fa1ad1f0b5559",
    "signature": "0xc085a61a3a990f12d337c6cd4628be4fc12b526b9023d840636c4e1fb42f46c345c19c4a86cd8f861429da110d35eed439ecb776f60c936171beb462c7d26c621c",
    "signer": "0x138211692b4e44fa8133FF53Da30AD345820524E",
    "userId": "904871299"
  }
}