{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "752893875",
    "entityType": "User",
    "nonce": "0x36d09a0cf85d217681f27daa94b3584445681d1a0051fbd8873afea6df7cae1c",
    "signature": "0x97a9d7764074919ee53ebc1f54c410b9b84ea501be6435a6621027d206272aef404ee87e7c31a0183cb8d8d76fb4e5fd8dbe5e417b0413d39815e2a77dea5aa91c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}