{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9cf778e71b3767410ec636218d00a29add5d509df6d4b3ea11a3568d4b0e303e",
    "signature": "0x5de476a3d777df5b8a76b631910450142a192ffdc34bcc42e51a86fff45fea4f667b2c763cd753fe1713f932172ce0f1e3fcfd4c9216291c09c43d5c57dbc71b1b",
    "signer": "0xc9c1BCDe972f3d9A337F42DA5b41CE6845190a18",
    "userId": "743528597"
  }
}