{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216982",
    "entityType": "User",
    "nonce": "0x387cd4e2c5802b904d2a2d3b6cb8ccda9e2fa3352171ca09587cc2b1cd363367",
    "signature": "0x64dfcd41b8f7fc7947fb366226e63f0764704fb0dba230d79e5472cd6524105250c0255d4b5d62eacd8f1093d11812b5168ddf5779e8b2c342f0beeaff5d08f11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}