{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42278",
    "entityType": "User",
    "nonce": "0x5fa1a895cdf214456975862e9509ef7cdfef116b7f79eefedb3e73d403ddb986",
    "signature": "0x74e01a03876b59acf6ad925d350c7225bac2a3149dc5affa9c4d1d25a78d98be6b2d07e3b0660718fd6dfeea08000e3a356d844508e8012c092a216ee56a88a71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}