{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "74571",
    "entityType": "User",
    "nonce": "0xc6c9e3007f8243e1a0b85420e8a120ec43e46629b8073d8e5441fd128dbbb5a6",
    "signature": "0xa9377ed8e35f0f7619e1009a40e90acfdee28f87164aff8f259fddded1456a8c35fb1f374bc4b70689d734a537e8637d626efde985ca86ed632b6d13bea0b96c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}