{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943956503",
    "entityType": "User",
    "nonce": "0x6a1227aa67e40c996973b10b1c5fb2e568e92c7af095c6d2e1076c487cfaa747",
    "signature": "0x2aad8ff9b48d5bb1b8411109f7746ff68eab84f229753155f8d0c48f6af38b6724e3fafb78463d70a46b3fb35d118a3cef773d8e9a518a2d22101c136b61fe021b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}