{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "942771296",
    "entityType": "User",
    "nonce": "0xab2edcd98cc0e427b1df128ba07cd957468dfb2dbacc81ef071666ba98b071a6",
    "signature": "0xee4d89e0a44c5fd51cb2ed09e1c6baa3af64e66c8bcd7daf23b0008ca9badce86a800dccdbdb9b1f5ab4f19898694c569cf9cdf5e1c74d99207d38ec3f7fc87b1b",
    "signer": "0x1F9dC682fadBAc94c0Dd4ca2232a3f490704a737",
    "userId": "737872723"
  }
}