{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354441",
    "entityType": "User",
    "nonce": "0x187489b309b4a7a35d74a1ae41f79b59096fd0986ae31a1004675120fd9f19cc",
    "signature": "0x80616eacc352ac4ab355cb13a7114c34580b6c0eebd79858b1cb2bd5af26eb8833bab9e8fe75f2a58923b3fe6a826dfeb614b98892b117346528c324a7f33ef21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}