{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "614212580",
    "entityType": "User",
    "nonce": "0x9f0d5212ab53f894b38aa78e41dd0b341cd79f4f3ea11b08a50e804ea732ad96",
    "signature": "0x1da46f4a0628a50b8c4aa7da2838b028e519765c4cb2e998c0384ad4c4330ce0629c6ba2890e534c16cfd052125cc2eb92559f27366010235f036bc8e2e511a41c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}