{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329231",
    "entityType": "User",
    "nonce": "0xea0a1e6ceb082b996fb17d5b031f18376e4a65fba541990b2175c141593cc019",
    "signature": "0xb4d6700c6696ccb90c097ea3912cf81eac8505869a0e5d5f05da3c21809e008a0c8d4088e91d566072fbfdce1b621c6e9ee48508c271e7d9460d1a75441077931c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}