{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x0e542f98f4ba0d44691e3f4dd0c677e7be7ffbd981b22121ee8defc727779097",
    "signature": "0x8c4f0286df7677e1fedb42d431a92ac8726864989568915f094735cd590c44611f40b7483eeb6e3f7e9e3b9d56680696374ede5412c4db68b31a1f3a4d2259361b",
    "signer": "0x28b9f9197fB6fe7356F4228d71DCDD1C6aA3C8c3",
    "userId": "252398720"
  }
}