{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280440301",
    "entityType": "User",
    "nonce": "0x18fe9e5e6f5f2522a5111534027b7bd89b495b7f520f97ab37d40b26b665be0a",
    "signature": "0x74f79504b99839e2f230f292fb0ba4f8492d09026b3059d44cdda6b6812b1a1a26556f99a75029b84075d413b1fa45f8577c14c32b37954c0ecc4ad7941962e41c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}