{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "745004514",
    "entityType": "User",
    "nonce": "0x384a24e3999e44633e0cb9cc06a7d3d1046c85f25b3c177e03183e9762c29617",
    "signature": "0x5e922cf7576faf13f68e3ceeca5e6696fdedb1aabdab5e6f99d1b37b5d8ca679738f183d35e362146d7b02529f870cf09525bdffcc8c1daf38422cac3c8f87331c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}