{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x975544d9eb92a0911bf5df5e614d3f5c6192272dde4c42305eee514c666dd191",
    "signature": "0x36ea4c54bbcdeffef1d30dffc09d540623545d641ade8aa2281c298cd66a47671e182c14873b6c92723f2466b568c9de0ddd4ea821e5408b099abf78a2ae3c531b",
    "signer": "0x538B73aC8AdF9F1F78e8b6d7edc88BC83F7D0c2a",
    "userId": "459977335"
  }
}