{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4686",
    "entityType": "User",
    "nonce": "0x105fc8240aa436a854edd183d042089e2cf4258bb0e7ba129313d941bf1b8a2d",
    "signature": "0x8cc6786efced3cfe0e217180bace97753379a417520d842e570ccd92d746c64663afbbd75ddd717c9b12bffd02d41f53e253e465054c454b0cc3571c626d2f5d1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}