{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "413368361",
    "entityType": "User",
    "nonce": "0xab77b631decd598f14e1e20263acc2ed51a4729676ef7e5c0ddd8b6a86dffe4f",
    "signature": "0xdebe1211d40f8669e161eab23bcaf82a45301ef615d01b26b0544fb2bb428d587d1ff574317ee57485c30729d50b864c36acb3d210bd2b02f25b8207be4d39c21b",
    "signer": "0x24B4E69A50F2892EEA06A4D8AE1f8C2d5019C9A8",
    "userId": "873621847"
  }
}