{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138692",
    "entityType": "User",
    "nonce": "0x3d914532101a3d33a5ab6afb48c72afe092702a2fdc9ac69bb58936346ec95f3",
    "signature": "0x51fd9cbd1a0501655beeac9556c69cc89d6d13deaef71dbd5d3ac55d99b5d80d32353826fb6324440e0731ce2c278c1c0579dafd6d59c9f7f5564c11e447abdf1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}