{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f544d68bcf4c33f0cf05ce6272a7cd3cdb807bf8eff2d466951858b06b022e6",
    "signature": "0x24daacea4cafe25779e8ebaf8d4e56fe09e7fb3ee03084c72fa6f7cf6fdd4707519920a0ee72a794e71e6b187f534a2e1782823beef849bd45503d9fe7cf80241c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}