{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2051621",
    "entityType": "User",
    "nonce": "0x67c4d425eb99f90cee72d829456a8034725dcd345c4c5ea273c043af6f1fbcba",
    "signature": "0x5f56d4f715d39e807f48d12d1a5a386e6f0313782de570824adf3eb3ed816e224a2f362a90c95b4c7acffd9f55f101d31e97a7bb45e09a01a6323afa3afe07831c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}