{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66768",
    "entityType": "User",
    "nonce": "0x317067c06c5e2f9e29714e77f4786d943c6772743b1d02dc1649c6a242cbed7b",
    "signature": "0x97f4030141a0fa7bc4bfc716329201dd83dee82883ba2a10b785c656caa8279c7e47ef0557a4a44b5b46dc6ef81d2909cb7b4b25942d0d72e15e1933b5176af51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}