{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73662559",
    "entityType": "User",
    "nonce": "0x49ae43a928bf228b6c2943768d0416916fd4a57f1d0f34be9c14947c5150911a",
    "signature": "0x4954bb7ea95a7124db08143a61396e35553d41793f0a36b1808b8bf0956328d879bd9b23c4252d92ae698483fec002ac761f786a603fd1163838d43dbb0bcd6f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}