{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212314",
    "entityType": "User",
    "nonce": "0xa98daf308056900e09a90171ad993f9e13010caa31ab9e7ca3042220d2f64040",
    "signature": "0x17cf73e0dfe110ea90429922840ac18519c410fe0b96eb45ca6608e4b4e705601bcfdbd0f85d36f66555060aa3ea5ff553ffece343cc3d57e19ddd7ee549059b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}