{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x8c5a53c764d1e3a6f0e378454f2abe63ba1eb32ecc379a4ac204583b0271b7ac",
    "signature": "0x062cce0e364ac6125523d9eba3876e31e46b0b6920c4a5af23db35a3d8ee8ee70fa1d2c88eb22a890a5c534c213f41b58ea7b9f44f31e60bc27da1e155d3dd661b",
    "signer": "0xcE1000874CF7A0a7b16c35A55F7D6f10C607A868",
    "userId": "442277469"
  }
}