{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "289579076",
    "entityType": "User",
    "nonce": "0x6109825af0f551b04e30b61e60c1dce7f4ad50c6be650b03e64efc516139347c",
    "signature": "0x397ec85c62f1c0bdfbcfb97559e727b1bc85eb996a8c2f94f618bee84ecaa4bf283c344a4e69f26a8f403706764b83638a99db2c4ba18f6e7375dec6439a20841c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}