{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "452074494",
    "entityType": "User",
    "nonce": "0x8efa486059cc610f73f7564335cdc18983df2ff50f60b859ac892d8091974879",
    "signature": "0xe1e99c6e22be416c16b2165907e7754fd78a4ac08eda70afa225ad3788b0401460571b01282bfaf3b6925c0296f84dbefb1de52fc1c8d259f6d3e3cc671ff5491b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}