{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d5040f7389ccd8f91eb76d4c4a1c03e5f00c4f64d284aac45f74c4668892061",
    "signature": "0x941d6e962c838df8ae001e89a4658fca908bad01fff95a81eeb3deb42156bd900f0c2a9bc3a378a193246dac117fd492af61486dce9e57eb7c78840c1d3b41e41b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}