{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150929",
    "entityType": "User",
    "nonce": "0x7b0ec09421322eca923dfc5355ac50f6d2a5677c4010e3bc32a1cb9c4ecbb65c",
    "signature": "0x4b3f2cfcf61b3d2f51724557512544c21a1073f31e7e64cf589a1da68d7a38281152e5aac63ced88b8a9fde129ac19df354a168bcae83279b27e1a20cd389c391b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}