{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "401245662",
    "entityType": "User",
    "nonce": "0x432fe86e249e1c574cd57be67b44f97f7cf374e569665a1c71be3d059ef8d946",
    "signature": "0x346fbad2a6309c3c8bbd503d1a83bdc733d610a95e089ad69ce7f557a432af1e0f6e0c82fdc360fc16eaf4d0e720de0ad88571923fe7a52d5b90a2cfa4dda26b1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}