{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xd458d9347340cea18bc1a0f418fd8a7b220f7074fe46fb2df9b243330a02ef90",
    "signature": "0xe224f5999571af50739249cb627ac378cfe22fc7806c8d886f49e40374b4fdad3ecffc2cd3e614668ae2dea6f5f31c02bdfd1795133f064b2f8d3371544b148f1b",
    "signer": "0x8347D00964B8c402D6Fe1261B2cBeB49958d7811",
    "userId": "186667247"
  }
}