{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67658",
    "entityType": "User",
    "nonce": "0x9147098918789ba6868473866ed88b10c80f30f7e622c21693442274e543a72e",
    "signature": "0xb8d020fd9d55551531bb2280a2bf51d1c8c304ccc826c681d8674f19bc70ab025640e21bacc99ca12b6a6910a17115e302485996f13c7f8f754359ee251fcd011c",
    "signer": "0xa57b4357994d735DB3Db20349Ac21e880472e94D",
    "userId": "521443517"
  }
}