{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1756269",
    "entityType": "User",
    "nonce": "0x1d9677f4ffbf35e480ade2daa20766135cae1fd816558ba0e6f3a89e873ef77a",
    "signature": "0x1e42eed163fe2a2f268f1904f1e096373bdc2684ab3a9af537263dc510430e1b1f15c76dcbda2dc27c61ea833222e292f113585c4ec3b465be0de39a488ee0751c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}