{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1500091",
    "entityType": "User",
    "nonce": "0x55100b534b465d0889bb22ce9b4e3b5f450ef477b60d98d23dfdb6c4b86b6fe6",
    "signature": "0xfc5343a888ae18da06d47ce0ce191054f4757185e75ad9e610d9417f6082306b604d82de0926810f84fcf5fda855f1a88b48e4ef905a41a5d3356c03fbbae4e11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}