{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0x2a9f0bad04acb51f7260b425097ac2b5598808d1589d036c0ca884e0cf8b237e",
    "signature": "0x22239f2270d2fb8071e86f06dcb7f6c98a8c1bcf683115997a8b4dc133fd596b2e66254214c0582cef2e5f9f10d14b91d60ad591da8ca90ca6cb021340c295d41c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}