{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68974",
    "entityType": "User",
    "nonce": "0xad74b3e971aa86beaf6a973a35cec76a195878413569bc2a1af96eea20e4218c",
    "signature": "0x0d9fd1164b4a5489a8f5e24f6d68835e9e3d5956929d70ba74ebc75934927d9b1c18a6c506fb2a8f1dcfed7cc75711640c5bbe7050b4daeb92480318a152ec821c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}