{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9254828fd0634608e4a8dfd158d7375570aaf180c98e27ddd81d4cd517295544",
    "signature": "0xccd408527726371c04d1e585f2af3f316dc9312cd8933d2f0648fb30c469b752518ccaa62884319f898b5827efc69a8e3dd6069d948ec400dcb0142cc72220411c",
    "signer": "0x7BeE6A029868871221bFC265e0DAE4553A4eC744",
    "userId": "229698256"
  }
}