{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "766649095",
    "entityType": "User",
    "nonce": "0x9b258dd34c82f235d9212a49389234f35b566296505c81224ff1d200bb19b1c0",
    "signature": "0x1dd21cb57d2e7edf6a0f645ea843c580f58bcad3bb56fe51bcfb2c12e8beda4048434b9a9e50291a137c21a3d05d62d601fc6210acc0ac942c27fc32a17d254b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}