{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3f1cb4e50d498953b1842e5a38852dcc7c021ab18f1e1810199700631ed0f137",
    "signature": "0xcac4196b50541a3a9c482364b0393873029a5a92206102aeb21583b893b2608e4db332fccfa6431705c4979cf1b12db883e139713cb9716c6e7d40e99b4ac4471b",
    "signer": "0xe5CEB808943249843A1430E3D1D451eDcc04dB12",
    "userId": "187682866"
  }
}