{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf2be53d6a4906ee15e9fd6e061a16bfd8e5caa4217a47c361c00126bec281dc2",
    "signature": "0xc1384f55dc1bc68241eb958ed50d86e8dd3418c903b033a930b76b1b6051f9373609f52d1d3eeb1552d63736f74d84c1660cdbf4018394a30287661b38f4eb661c",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}