{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51425",
    "entityType": "User",
    "nonce": "0x603df9ff319f811cd9e96d335ac45b6c4b537c01a0e5bfe82aad235b9b3d1437",
    "signature": "0x3734d46f8f0f79c8864796988a69a7e9e3b92414ca22e4cf072622caf99f93f83c33b6015f82092cb7399c482dc79ae9a82ac1059c6d81ab50503a3d67b1859a1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}