{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121018469",
    "entityType": "User",
    "nonce": "0x2f796b9681e3a690d4ad412a2cae35c8a45ad74fd0c1fdc34f9b6f6faccf54a7",
    "signature": "0x8d629e618b22c4cd4fa28cba8444abef7c1601957bcde8fbb0126960a5e464216d8ae3388f6c4b741be9c35418e31ab7168b3d7d774d0fea4760a95b4d87612c1c",
    "signer": "0xa1F606584fdE30bB7d4BE2EbeC98A5F95E4559f4",
    "userId": "786922215"
  }
}