{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388907",
    "entityType": "User",
    "nonce": "0x5e789655fb79f1f74ce6ebcecd75e3e3c44b7ee1f6db0067e7aa61ee3d4cb6d2",
    "signature": "0x93adecc9ff0850a8c67d9bb6d2dc77c322918eddff9c0a58e71519a2760490094e71b92f101be831fa1f8b7301ee9ea9cc3e5b58801bf6744690d44664af1cfa1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}