{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597677270",
    "entityType": "User",
    "nonce": "0x18bf3cd90e7924bdc941c540f1cd196ae1e9636b388a85bd63a442d8e31a89d3",
    "signature": "0xb5e6258596957dbe656c8672099005d498ffbd28ddfd10bf1b0d09ff37e57d3072e8c71d67638554d5780fbc802d3eb6c96c830b722a242e5974c131de2478131b",
    "signer": "0xb68FB6A5ae9015De46D9634e946c04517523Fa43",
    "userId": "134619804"
  }
}