{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "783252567",
    "entityType": "User",
    "nonce": "0xfbf38cdfc7de850030133a6219e0031a0aa27dfa9e32ad764ef3ee3d9a2ae304",
    "signature": "0x98b05264d9d350ba4a9017f5cc2e11de4d3c38d365d761444ae4073c5fc03e035ddaab2ee11ccd07aa2b826501cf1ba12b62ab98bdacc1aa152b79440abdb8661b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}