{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "966551589",
    "entityType": "User",
    "nonce": "0x81deb0110cb21225243cb787e7586880b9a7fd5bb27def69a3a4f5cd4be44c78",
    "signature": "0xcaba7428b46c5daa835d6d5404703f1998a7e576d0d1065b42b531de474d7fed0e98de933dd689b246a088e824cb0c64f4f97dc557b2f46e0860e7ecdba8deae1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}