{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x0322e8e0dae333caea9ca72950054d9e734f201b8dfe4f2de3751dcfc00261f6",
    "signature": "0xe9124ea3e4f5ee4ff325cf7857e3a4e4d4ddff978e9948c8d874f4f1a148b345229449449a939af4e90015fcb3039d939ef225d6f655d47ff12b1d31bf0752471b",
    "signer": "0x919673F6f05556E55D1c9759325eEBE26D865DaC",
    "userId": "243601242"
  }
}