{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2758c21e93be3ada62941af9645f76999bef602158fe82441a130af7dcad8ccd",
    "signature": "0x0eded1463a6dbf0ec807287804598ad6c69a9f7ae6431ed66737db5ec5e4fc6e38b3c82c250dec1e1388d3c1d1b2d7bec485918859d8d3c85295f340b634d5b51b",
    "signer": "0x03A4F2A902bD8670161AFfC4e6a95a685F1A5fA1",
    "userId": "190291636"
  }
}