{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990579",
    "entityType": "User",
    "nonce": "0xbcdd101724e91c8f016f9dc1dd4dc401a89ea5752e4418ef017815b4cfc975d7",
    "signature": "0x5f94490c6eb86cd9ccf6d4d5f9bfeec18479cb2dfa04ff7142fca7143cf19eaf416bf61cf7bf82bea75e8223e712054710f16bc64b195adc0aacea36adcc8c9e1c",
    "signer": "0x63E1B856BfA0Cfa2BA381C4F59838E153509C163",
    "userId": "553872362"
  }
}