{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377884",
    "entityType": "User",
    "nonce": "0x8db90c8d55433cf396c5f8654228170cc593a9fcfbc8b41bac5a15dcc9440173",
    "signature": "0x0240fe295c847a8cce1bd1133d32d18a49cb163deae35f2f41be01ee056f9dd92ba59ff98fd1a9f04993d713d77dee833185f0f22b21a4b56d3057b2996b60391b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}