{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137294",
    "entityType": "User",
    "nonce": "0xc7713e474456c8f036d15df74198906d8b626362f4f638e1d03f87af387a7a59",
    "signature": "0xfbdb16d340723fa81b948d8013305635cf425b68016ff1312f63e595698b3c441291960c68f753e2bf268b3f0e39f45a38c2df097be9766307e7f5a4da53e3291b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}