{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x74a51ecc4e433c5a8f133d7e4ba58434d98b2ff34934d6ec059c130ad1cdb459",
    "signature": "0x6c9a3468d2610f6be6368c10f1ab5202ab68507f4eb7bb65d63950fa4bc63a317ba6e4ffd0009ba4ad2a007fd1654908c993c7f3b56e34a8a0b71be7db3729cc1b",
    "signer": "0x45C3C3C84b1FBC3f9ecD57BB3e43dE4044d3Ea3E",
    "userId": "975596375"
  }
}