{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x7997460e66230ff762a37b2e20448342f9c323d0ad85c7cb164d9c4389baca1e",
    "signature": "0x593414d44591363c1447dfdaa611b873e33867daee242db80c2fa26b914dec0b02a5543c881fd378fba2a25fe9e45af0e6c07e64107f07670b842ea260b7f85b1c",
    "signer": "0x367680E9B4EfE77a6636091FA6c2c71749Cf7C60",
    "userId": "40274"
  }
}