{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7deb114a4c49b893b6c88741df4f163a26d0080ac4b8cbb0f5a9eb13268c248e",
    "signature": "0xadf93be79c4c8af0e8ded0f565126f02a1bca8c5f4a8f4ab796b4b20c13a99bf10241b0e094eb4e1f341ce2ffbfba0011edb6fae9eb9c2d6b4e911496f6b2f651b",
    "signer": "0x1f5F68E1660799E87FaBE47981B42492ACd37099",
    "userId": "644137816"
  }
}