{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301508",
    "entityType": "User",
    "nonce": "0x05efa150ead7e3f61cea36de962982d1d7c7c61c2717aef06938415444d0fc8c",
    "signature": "0x86886e2ade301e948d863dc504fa36c0e998a6102dd1627ff7774321a54ebb1c7458a6313e18bd0868f3fceb1c15890ec9e2963b58c0969b7850caa1f5c33fbf1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}