{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348740",
    "entityType": "User",
    "nonce": "0x78e80b460fd99138b429eae0db282cd028394de92ed6c0234c08470e3e510030",
    "signature": "0x73ec623b58fd5f46c22a4784ff190a045f452054b0dfaf506d0997c4c962727426363a3b086285c00c05d9fa66d65b28f29b0a9bec9709902f9666a909343b1e1c",
    "signer": "0x81EFA534196e076193ecAA58E56299e2828d8589",
    "userId": "763716479"
  }
}