{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143400",
    "entityType": "User",
    "nonce": "0x11b058d0504671759687f439d4f58b27ad021aea9f71f13dc811e02d2c5bc4bf",
    "signature": "0xa2b7d67e5825e77a24d0daff4ad61cbd25b104ffd1f8c9881e9ce53c54ec8bfa28e9f36ddab08b264ac922f101539882973e6767700e64a4f8010b466c8fc3401b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}