{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "527636914",
    "entityType": "User",
    "nonce": "0x988e8f26bb066c9b8ccf5aedef14c2923025f775ca9d7710f1b9ae747640a2bc",
    "signature": "0xcd401839e05b4f8f52b4d25460bf295e4e51514e25bbdf5693535bda602f016d79fb1bbfaa9aa11431a2a53c01573ebadfb9faf66a1ed4bd63b36c98f4aca6b91b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}