{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120502",
    "entityType": "User",
    "nonce": "0x30ffa2bdcfaab5991ccd3df0e9c767c7a7e31c4a90f80e6175fea2b5ed39d790",
    "signature": "0x9d4276434d5cd50486f9fc9c83d38af9a7b6ef5b9135f5322cf2c5bd269e326f122f9419a79941ca9d3757d574041782ef8d75dfc6cb3205ce1147f1ca0e23f41b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}