{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620379449",
    "entityType": "User",
    "nonce": "0xe3d066abf0af18c1941431bb0feab04600843b5982a9d7e07d33858da18af96e",
    "signature": "0x693a85fbd5bdd03f89c27c4f7b8b7d19009b7ad7110df12148034d52194f5a1a2f220c3d482f2416125e7e713d7a071ab7aca036f2bf18793f6d8348b523cbe61b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}