{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "61610",
    "entityType": "User",
    "nonce": "0x3978d457d325adb0a55758519930dcfbd2dcee919952e37814d87fb090fcec5a",
    "signature": "0xa863be3184889d1ed4e452ac50df30dccd90947091eb214784737f53e1c7622818e9db5453871f15c34fb228a65440b65dc178249f36d67d79d95da3c2483e301c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}