{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428661039",
    "entityType": "User",
    "nonce": "0x139aac9746e89b12e22b115d1f86c25e55dec01118d6bd4eec5b0850a5d4a1ab",
    "signature": "0xbc0e01b799bf52f40b5fc2a99b242f3285130878e1f9db2caa32c6db72cf0bf15716b12f38d76936170a3a80e0ae10fe771346ea0407d41f3d188099eb85a8091c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}