{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2898",
    "entityType": "User",
    "nonce": "0x2e03894e022d85794056a1842eaa3392f7b216c9ba9e385bd9491205c5207027",
    "signature": "0x832b114f80faa80872d15887b0fc07a2d04b7193a696b37ff44252f80f7a573518b6352a6bae5db6bcde2eaf1937391b1c80d8ca5f3a61ca34eacaa9e50bc46f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}