{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142601",
    "entityType": "User",
    "nonce": "0x2cc9410f73e8616ed935749e15f1fe93eebcdb75cc360fece7c31435e35c6b80",
    "signature": "0xde9d3f101a96f5e798f306f1e62d1abcb51cf220719fe8af531ff11b63d5948239aaf07337608a15d67975b0e428131397093a9e832eccc26426ce861c475b7b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}