{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1437857",
    "entityType": "User",
    "nonce": "0xc94ad4fe10efd9de15d8854ee5b797542f977fab2fad4c7288b75486242d5c00",
    "signature": "0xd3f07ea019ce1f66df8bdee8246504041c41c47eb5cfcb46d0e8870952769f72712ac70126199fa2038d38f7fef7d20ce0b74697e3ac596dd3fba10121772b881c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}