{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "833590211",
    "entityType": "User",
    "nonce": "0xe0434399315a4571c651de477277abca93628b2df4c5c54fa7b81e73f39bb5ad",
    "signature": "0xdbf0f06d113bec70c3c0a6f4e18a971a1d3a2da7cd580b2b577a7206b0e9caa117a91fbb9c98d4e1419c4e2032623b699bc613f59b05c598c8fc79dd169e36e41b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}