{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68879",
    "entityType": "User",
    "nonce": "0x16f235d09506427b237ffef8162338d7beda6f22a05ae31a0d30c5fcbf11f408",
    "signature": "0xb9962c7537c804f079a66158dac6e4ab5479902923132dfee57a36157bc425da5ad57cf8be49cde17df1c33bdb7c2336ea21916cadd6333a55504950e845dd891c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}