{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984215347",
    "entityType": "User",
    "nonce": "0xa3105290d3e0ed4da050379398cb116b544b675a7f437a3f1bdd7b52ab18bbbd",
    "signature": "0xccbb059cd6a92b7cc1f85311871f174c94b63352b106b0bb1fc15de3c201692472e02b4850ae2869d0d12fbba37479c735d7bfffb465155f6f2499685f5e28661b",
    "signer": "0xfe6022590e48C8eA51d706EbF4eAe799214A737c",
    "userId": "900610030"
  }
}