{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c7d8daf2c9665c511e9834902980bc51dab72903272992eb2e7300c85c2a40a",
    "signature": "0x9268bd74677b1c9b79f2e9444d15bbffb1672c0b63b3862250012dcaba89666e74c7bf8074b3d3b48f34c7f9c0bbc7bf86a00d310492af411d09e76cd672e16c1b",
    "signer": "0x02b22aB437A19E1E948d9b814Ec57BEcC859a5d9",
    "userId": "640927319"
  }
}