{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8254",
    "entityType": "User",
    "nonce": "0x23e21abf28a6a4d8e4069cf714847641cec42a8a1038ea501a469bac7b8e3f72",
    "signature": "0xb14fca925d3cac3cfc1f13c2d218a587009e1c2c0879d54edf63cfeb50d07f0e1bbd11791e9f8f36e427dc20650061e47ead07d9b9d2bc3f52bc7385dc9642f11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}