{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc3dc141c52a7616d0fc58ec3998df6c12069d459cf159eed683591b1149cb616",
    "signature": "0x4be746e0447b5641c234d0640dfa54dc7d0a2ebe0d7f75fb4402944aea21c12a51cd0c43b6d3e35ba6d55194b99aa7c6bf55e01628ff0773c907ab4d7baabd4b1b",
    "signer": "0x91bbADbc658270eC1a940AFa278dE21b9cE60a1C",
    "userId": "867801987"
  }
}