{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68304",
    "entityType": "User",
    "nonce": "0xdd34ef419be3003f5926f6fdbcfdc0ad2bfef5b6f7610eb62f1dfe8fa20d6247",
    "signature": "0xffa538ed4d9a782778c7e04f25286d10e18fd9f01b391387de913d43230e3c7a4ba739ad17c616facafdab8a2da5f14e71b45ff7694ebba999eeb3b764b6b5361b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}