{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "877304859",
    "entityType": "User",
    "nonce": "0x558e70079cc90925c6584135db0f8d1513a16fcbeda01a40d245071e4fda5f51",
    "signature": "0x799e29ea8589561e74c8aac01ba31e8550a54991b7651d6945aad757b6dc0aa7084160381fd98cd09b6cacefb721e2d647a0183793cbd92f684cd7c481c6779c1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}