{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xb8aba41487af83edcfd5664eb0477bb0046e2daf547a72ce4a1fd5bc8ea569d1",
    "signature": "0xfa5acdb07a91cc8923dc8245ae88e14d5abdd80bffcd4d9ca9e650ffd3a542020fb052c98552928a7e0bc4b47811a74496009cdae8585e1e72c9166708584feb1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}