{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "857164147",
    "entityType": "User",
    "nonce": "0x6f55edeb5ad886e96d447c1aca2ea5dc7b3ac0b450c2f5478bece73129f9cfa0",
    "signature": "0x558616d60ba5f8b1097c6b9db15ac8d125295355ef080a8ef26dccb6e127e56f27599777ae5640b1d8d17bceb9a33c6e634f6156616ba17efd3115e16eaf04661c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}