{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7aaeee17f6f8bddb831a0b1452bc6177b15026b934dc915b0396af1a53b984a1",
    "signature": "0xfbcbd0c25ab656f8f2024359048a483e7a2ff04b9793f0fbba6de8f2d8df9d2e0df9150013fa9ddfb8a39895b62a49ad433654ad9a95e3c8800547b8a76ea6f61b",
    "signer": "0x480dFF5F3f4eAa74182DE17004D849D7f52cbb4a",
    "userId": "520090296"
  }
}