{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xd5f4649fb3e4c772102fcabd207bd0e9ae3052062b4b7dbf908409221d77090f",
    "signature": "0x74f5df4553575156cba881d1d6639affbdfb26706f9c44b86dfbd4fc8c6e0ce62c094625a3bb2773f65f98ade9b5f21987f807bc352f26a863488624e3e90ccf1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}