{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4490",
    "entityType": "User",
    "nonce": "0xf460e96b5f38f1ecfb5708e891bd4272bb46584f7a937871628757f09d0118a3",
    "signature": "0x100d1244aafc1832bcf1f8f437844296cc653051d0dd84033e31faf58dd78c76627e61e471ead2cee8d7655093659b7aa13cd20667395c799454ba31e28547261b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}