{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "819568368",
    "entityType": "User",
    "nonce": "0x4cc61afb9e2c521186c847ad0c1271cda4d2904394a8bc88a6a273c99bb56814",
    "signature": "0xbaeccd9a13a653995b4b38f44e2243143d81e0408d508d26e892bfee47a5f607040a85e6bff0d74ae5200436e12f00f34da13ab3549fe9a04228cca0e34ce53e1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}