{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "915409310",
    "entityType": "User",
    "nonce": "0xf8ba10507abaae27ca415ae53b36de1ebb78cf902eb5f8ddcb4085705c6e3c1b",
    "signature": "0x4058cc6df468aca7d3b75f4d2a9ea3466a162bb6976230bddb5b591b69520b2854235da1aac5cd760576323262123d9afa6b695fadff3c7bb268a18bc29cd1961c",
    "signer": "0x6965Aa9ec89F0ab44c5241159D2188d7b83c1D25",
    "userId": "278763919"
  }
}