{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xdfc3e31e276362766aa41ecc7f75824fa1520f514b6e8a14709b9492e31dde54",
    "signature": "0x3921b8d99fac34314932a2fb5de8f94ff2a291e7dc1867e791d1b4f9331696f315988da01600e73bf976c6e8f77dc8acc74b02d0188d764058019e9748ca6aae1c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}