{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "9621",
    "entityType": "User",
    "nonce": "0xdc393d29ad93392a0019146d0c8c94ebc34283cdb4d25adebcaf16eecc2262b6",
    "signature": "0xac3d79d6ea249e38a9bdfc9aadc57ea834b1c1106cee914d08e13ef5f81b465e77451626bad8fbb81658da75d3ef84f917e27f77a0d021a19860ff04c4b3cdd41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}