{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "663801332",
    "entityType": "User",
    "nonce": "0xc8163959301825af34d8e0b419f3a6e591c032cf6c84ea2df528564c43444250",
    "signature": "0x2a7b64411b4c73cc1e9578b89e188b350eb2c335e1a9e0c3bc3a313e361774302d1e35ca129258e404fdc5ef36d0d2832c36997f315d3d69289bff25e56d8fa21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}