{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5074",
    "entityType": "User",
    "nonce": "0xb90e47e9474362595ba5910889c3b53d45bd841dbf072000c7b669ee67fa9ecd",
    "signature": "0xb88ab0d0d907a7591ab78bcac45add03cffefad513070eb068c5a4492f998fbe4378b59abcdbd2e21cfe29d64c5bc4f2f96684303b3eac4e495299ed20f4c6641c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}