{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650714154",
    "entityType": "User",
    "nonce": "0xe4ca77f5306f4e09c7b2578a3febd860e3af8c09f5c747de31b511dbd5e1b73a",
    "signature": "0x4b745f96e07dcc4bd315ee848fd135453fe0efadd71ad597b9578a103a6e27291ddb3611b73c98a7a6443c7e2a3934c0d4d8bd081252fbe581949f2a0a0777a61c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}