{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xaaa7c9311d5163f588ff5d7ab0cbf030b189f06521dc5b7d63584381f05f891d",
    "signature": "0xc514a3708b96be1b0a0e6090e6ac0eaad81ff4f7348113f0d1f1f12e17374f3470364655b1883c78afc90c6a81174ea5836378755c04d7bdc3c0a201837ee45d1b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}