{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3199a4a22b0edb95ff0fb813f88c8b69acc6380ba25f2be31a89400ab693d22d",
    "signature": "0x7710418176c5dd0cfa845bc5ac1d634553ecde5451ba91079bf7c512c7f153106a56b035f9da682ab2366c91f9e9bd88d09a0df9596e7a6c2acd247a9becc37d1b",
    "signer": "0x47c5EF525C8762566a81Bafaf155967e3D2BBD3A",
    "userId": "352412824"
  }
}