{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0xc72450a448d882faae2adc05ba83d2ae010ab4fe64d0b3b252e94f78490977ca",
    "signature": "0xb20825286d562c7ca1b58ac90725346900eee3a36048e54d60bab662f500bff53c0592bb6a3d84eadc110f0878ae8b3db69659279bad9a319a9d7c00b76e24991c",
    "signer": "0xAC0cF496935C416EAEd7919A9b0A968039ffDcAC",
    "userId": "129364372"
  }
}