{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1c6d2541670fc0a19990a81af7189e1ea26c26af9494e41bf87d29fbb036b485",
    "signature": "0xe1fafcf4f44c6c99de87bf0612b0eae2704a202f543a79ca6fae150ddd56efbf745ec7c47deee07bebfd842fc756ff30e0b32ec9990ae74358b24121cf1d63c51b",
    "signer": "0x02983e961DC3432C2378361f2AF43F27CC947619",
    "userId": "678485749"
  }
}