{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "407905",
    "entityType": "User",
    "nonce": "0xe74289ba0ec53d57a625a8c52f5da04c0e1d196114c8cc5b365f1fe36b82c825",
    "signature": "0x4d5622ff14ea54d2c7ec1386ce889b5448112e28ab556e047098dc62a0a2e86059ca74f82f06b0e717eaddcd02be42873b6dca8ddb5db3273ca52b8e42ca44a11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}