{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139859",
    "entityType": "User",
    "nonce": "0x76a136a70a6c7ad92535d05203ec402f08c5ad4b25347e7b2003cd7a465e6778",
    "signature": "0x50d405aa6ff5bdd17d151847a941971de17e87f1a14d5bab83a569bef65a69b22e9d7b3487ba352aea7f2838d31a1ed93719527696246b434660117db31736a51c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}