{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x72f38fb79ddefcc5c446207006a02ca83cbff367ccd6c2acae9c9a753a11962b",
    "signature": "0xa61402c6ace3174577916018201bbc9d16572700daa17c8b896f715596114304728cc8c3d88ae1f77bd7c9a44f3df1e1b89398e8f64b557466a7b340f8ad72d71c",
    "signer": "0x368e43DE291CD320cF48ECF204107F88a5dC1533",
    "userId": "75915611"
  }
}