{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "730221",
    "entityType": "User",
    "nonce": "0xb00c21d6c748aa2b01eaed5e77af6206ad689d55a435017055eea566c66e0b15",
    "signature": "0x739ba55dae46123749cfe7bc2ed40dbe7a7654c7d665635584d8a6c43f76cced2a626d251df956d5b971c957d564c611fee28edd110dc3e7fd6445a60193a6d11b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}