{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854614078",
    "entityType": "User",
    "nonce": "0x216980df09da3a760f497540dd5345ebc1433dce59d2aec7b2f39549bfef5749",
    "signature": "0xdc1feb911d98ceed20b615185eb0421d76cddf89c6f486162d6f7ff063ff1a0336d325bd0b524594d84e0b61082fb8f583a1f15b1edc4b5a82e124bc3ba963551b",
    "signer": "0x6440Dd7ce5eE2e610F909B08098D39f89250637f",
    "userId": "503764788"
  }
}