{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0xf4a994f6c97b453e8e49774a084adc2e8bca0fca50eb1d6c9fc5cc6092d9b34a",
    "signature": "0x47b40828b0e3d5277f9315bb3c79177e4f13023420f69e56d1c1a1a4597a979c1a948963c2a43df63990b8eb7eaccc0f3d4f11974ea5318ee38196d1b7bf45e41b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}