{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456594",
    "entityType": "User",
    "nonce": "0x497175baeca217ec39eeb06a0340fa09da946c1f5659df4b2f418881f61b4fe2",
    "signature": "0x3d9558d56b7c71e6756f78c4b7c6918a1272f8c82e95182e238094e31e4c601f2cc53a2955a163109636f38b7c99528d22469629e7504215b2eef30203fee4751c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}