{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305650",
    "entityType": "User",
    "nonce": "0x9cea4ebf87a92f565092f39aa3673ceb59f45c0905e8610e7bc0395bb3d4f7a2",
    "signature": "0x8adc16c320046eeb6f7ee2fe5e419892d0f53dbb275a493f3be41c09926d026d16a539ebb353d56326e19a42014ddec33c09b552d0ddead404b81ef5921ceca31c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}