{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd12b59863eccb3d68ecb0d5e499a45e6689e89b93c18215ba22a5b6c9b88a190",
    "signature": "0x9e16742bfcb95ec44a71c2b7c3b8ccb309f7a0bde9eedb48da80dc058fb87dd97051a5b159b8bee6893ead9f4219a57868a15d73bae776e7827f63fbb4d43bfb1b",
    "signer": "0x81f60DEAd0cdA833Ad17fe7Ddd37b36E62630205",
    "userId": "132087202"
  }
}