{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1661",
    "entityType": "User",
    "nonce": "0x2a530b44ee77a5cdb3853967b5549d4e5d9376607c56dca98f5c15a7863009b7",
    "signature": "0xea68dc66635d8b80e9df5aba79cdc42cf6cf79f07bc460a916fe551a7871aa1261e13e1c7cd2dd0ca90300670005cac0b8dc1c70400c25363d5a8bd9e2b5927a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}