{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "897648338",
    "entityType": "User",
    "nonce": "0x8495c6c3d91878f50277eedb0f99a3fb3ac8635d862b6d7206da9f55dc81a3db",
    "signature": "0x98931eb44149c292ab6d77487c7c529f253ffbf028d5791fd7aead3cddba15852e3593f3db7588b48f2f6a4a6d57ff17606c0b86d93e3884102fc2564f5935691c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}