{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1904529",
    "entityType": "User",
    "nonce": "0xc6a18dd8381edfc4ce5d117ff72f4f522d6ac330c768dff095a673755bd1d4cb",
    "signature": "0x4280bb23ef42ec8ff66e9f151fadb85447f1ba5d1b9c6643cd45d3e720f31961381b276796f3022a1244f59372258fdb5c3b52af4f5c3a89eab9c03d0d24357d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}