{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa2f1354ed9eced84208cae35ab798546baf2bc861ef945315a90fec3106349b2",
    "signature": "0x8bd2b42b8fcb7aa1982f92a9b318598d1a7c2a125cd5d9b8bdd72251f1c4ea195610aa9dc7d5711a4683745bcf423fb869d74807ff31751655bbc12f8ea15a6e1b",
    "signer": "0xaB2C68f1fFe3729DBAb979C7e65d0eD86D3BfF38",
    "userId": "243511051"
  }
}