{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308072",
    "entityType": "User",
    "nonce": "0xc5720115a2d54af3d084164e72fa60480e416104d74d3620f9bb4ecf6882073d",
    "signature": "0x734f71b6666f3e45813eaa844af7a9cea53d0b723435d36272f1f99dcc2723a46ea270412f1abe8fe9e86fc4d77db274141b487d06b1f5e50b9ec841563f25f81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}