{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148589",
    "entityType": "User",
    "nonce": "0x71d266ce8e59e142158e5fd133a5dedeb18615f283a8a0a7ae31ab4db89c14a0",
    "signature": "0x6e0491fb79835910c05c37366f5cefe9d5b6f71d897492c6faf05ddb7e489b3a1866265c538cd6813cb617bf77faecef6c9a3936615c3c1a14afee692234166e1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}