{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330481",
    "entityType": "User",
    "nonce": "0x619cc12d719e3ecf8754cae11a5a8446f88c41bb21713dcae40e66622006e91c",
    "signature": "0x48dc22666e81ae2140be6c111647694c295b6255cd6d6046b3e2117f70cb8c33227635b43fa0b93365a4c50c3e7c9915554436e8cf42fad3f441e8cbf5dc18cd1c",
    "signer": "0x195d9eE11400245E841C02c4b4288a90A8195e91",
    "userId": "103785872"
  }
}