{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335265521",
    "entityType": "User",
    "nonce": "0x7c06f9f3ea4a91c3f5faab3fc6e8321cbbf25bee4c893d20fd13836ddb3f3c53",
    "signature": "0xe29fb5e2175926aec4067faf1571a3db40ec8bbe735161f4f8aa60551846cedb2e1dfe6b735564f23caced086e6dd90d62cb834e58f1e4445ebafa1782b97b7b1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}