{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "439390831",
    "entityType": "User",
    "nonce": "0xfb148cced65d658d4c2626350ec4cfadbcab0a406931578169a93f3e67fcb2c8",
    "signature": "0x3d7d52de8f2eaf3746d3b6d39ae8a8251a6e9165fa1ce28d954f3341b37ef64b32523929a921b85b6a0d4148e301f3375085c848e79ba84a777204254bdb2aea1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}