{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348254",
    "entityType": "User",
    "nonce": "0x983c811a2ead3bf1f3efdd1374b8dd32a2eda07fc923a73791ea9b18829d1760",
    "signature": "0xb66c36342d34b5c3d0e766c776a7b51b9e6e629dc614723d5a2078765046386d1d7cd5279d23b73eb9bd3f937d829ca904c7d2293eb50b5074355feb8d4d79661b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}