{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "481025094",
    "entityType": "User",
    "nonce": "0x30a512f19e4fa37b01acc1aeff4f5e8ed54b83352ad4bc17a233ad9134b6ac35",
    "signature": "0xe7d5c7138b752d17d3863f460263002a64412e8dfe9ecad40ea8823fb1b8c8f4504c03ab20bfca9c6dbea4f631ec6f1d6feaf9efe523ffe364e1fd3fad66f3681b",
    "signer": "0xc925e3D5c81807Eb402BaF80F986fc737F7EfB5c",
    "userId": "230578654"
  }
}