{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1413499",
    "entityType": "User",
    "nonce": "0xe733061fbcb34af7f6d3aa5592ae6fd08157bc4e698b2f48e3dbd65aadca85c5",
    "signature": "0x56e3ff5f16899e8f0bdd20f6ecf3bc3ba81c525bd58d8cd3bc24df5f4c9c1b360ffe646c1798ecf77a28cbcaba0074acdb0f8dd3c88da04f416803c08ce5430f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}