{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9b05293e4331ccb9ee2c272790bf06a535226e92580b334920e5f65780e31c5a",
    "signature": "0x05e30e47626d0afe3033722d9eadc741fb99cac785eab54f40d4608c5c02c12350db229a32763e489c353835a1dbacfd9af8bcb6262eb21bfc69409854a2f7791c",
    "signer": "0x8e8e80a44344650671A8bcfB256A7D08Fa29BE69",
    "userId": "687531608"
  }
}