{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "347461",
    "entityType": "User",
    "nonce": "0x2149bd55f74b115f30af88a31706cc072bde1e6140c52a9dcf052807420b22b9",
    "signature": "0x2663a1e485acc37c75e42ee61ce961a066ff79dd848c57a6da3fd85dd4c834d05b01ddcc90e44dde76f51a553c50329fba492f5c60d67e91a0637718d9d0078a1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}