{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23b6de11592ab850d8f29b5d508cdd0fa2acc38011e8936c7994bffea23e88f1",
    "signature": "0xf409b8f06fe12ea608dfc392a818d074367cb26db456748443f8f720e4ace51b168a34078b57d4eb2777f0c171ca49b9208ef0a57ec8bc1711d2e932e34449e11b",
    "signer": "0x032aeF4a4a3d648af30998d7c8beb944012Dd83A",
    "userId": "837494260"
  }
}