{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "412109420",
    "entityType": "User",
    "nonce": "0xdff4ce786a386e55bbed916810fe90e3dd01044d3fdf49246ae49e30a617db88",
    "signature": "0x0781566c0174100d2c0033948e01d64a1b8c3c26377ee5a49365b1b8edb581d261916a29b93f46562ab2936250397621bddc749368ee8aaab2be3e57568d5e191c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}