{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75898153",
    "entityType": "User",
    "nonce": "0x601629c68e577c2bd6e87be573638d58c412b83119792d8fed34161b5469cbdf",
    "signature": "0xfcd8c46b8c1b808562688d60d234ceb6e7401f430ac7bb668acbf2688f55132008183abfcad7ca34963216a623da828d82aa79fdda803363f0f5b332031a2d0e1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}