{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5518",
    "entityType": "User",
    "nonce": "0x3ba6dffcabc7fb0253dd7ae87c5e13a589d4d41f1d23cb8348d12d73f860cc34",
    "signature": "0x5ebb8ef95872fe463f47b9ebab651093ca67acf37254eb051015f04e984b637b2273fa0510499bf6967e7eaf243005490c58023045cc289d18d8d48ac83c666e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}