{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x25a4d4b0893bf441a7873d09fc66b9dd31f27a747f90849f312653367bf3dad6",
    "signature": "0x24f5387264851ed5d22a862cea7fdd94e43f0ccd6fb0d1d3552a0fb7af378055429e1e4a11c5fa1b8b15e7eaaaef3e9c293993aad31f2092734ef165bb6039fe1c",
    "signer": "0x8f296DABb4945730734aa157F7EAA693b519b295",
    "userId": "350604703"
  }
}