{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "336949",
    "entityType": "User",
    "nonce": "0xd06a015208811f6e28b023b8cc137f304e8a12e4a699cfaf6a17c65e22a7f96b",
    "signature": "0xc6272d2260e527ed6fdef4a22a39359da0e22e66b2c4b9dc492572bf951d21873a6df444d1a9a2dd6d5048a18366d779a3dd4c2d890d0af2431e5cf1371d16cf1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}